A wide smile framed by two hearts, no parens. The ♡ characters on each side stand in for parentheses — they not only frame the face but also color the entire expression with love. Between them, the eyes ＾ are closed-with-joy carets and the mouth ▽ is wide open in a big laughing smile.
The hearts-as-brackets technique is one of the most cheerful ways to dress up a smile. Instead of saying “I am happy AND I love you” with separate symbols, the hearts absorb the brackets so the whole face is suffused with love-feeling. There are no other decorations needed.
Use it for messages that combine joy and affection: “so happy to hear from you ♡＾▽＾♡”, “thanks so much”, “missed you.” It fits Discord DMs, Twitter/X replies between close mutuals, Instagram captions about loved ones. Because it has no parens, it integrates smoothly into running text — drop it at the end of a sentence and it functions almost like punctuation.
In Japanese the matching idea is ハートにかこまれた笑顔 (hāto ni kakomareta egao — “a smile framed by hearts”). Pair this kaomoji with phrases like だいすき (‘daisuki’ — love you), あいたかった (‘aitakatta’ — “I missed you”), or simply ありがとう♡.